Auto complete doesn't work with SQL CE password protected database

See more:

SQL-CE

C#

SQL-Server

WinForms

When I add password to my SQL compact 3.5 database , the auto complete function for the textbox stops working (although I can connect normally to the database with the application.. Namely the connection is functioning properly).

All the settings are the same as I did only add the password to the connection string.

Working auto complete :

SqlCeConnection sqlcon = new SqlCeConnection(@"Data Source = TranslationTest.sdf");
        SqlCeCommand sqlcmd;
        SqlCeDataReader sqldr;
        AutoCompleteStringCollection namesCollection = new AutoCompleteStringCollection();
        
private void Form1_Load(object sender, EventArgs e)
        {

            try {
  sqlcon.Open();
  sqlcmd = new SqlCeCommand("SELECT EnglishWord,ArabicWord FROM T1", sqlcon);
  sqldr = sqlcmd.ExecuteReader();
  AutoCompleteStringCollection mycollection = new AutoCompleteStringCollection();
  while (sqldr.Read())
  {    mycollection.Add(sqldr.GetString(0));         }
  textBox1.AutoCompleteCustomSource = mycollection;
  sqlcon.Close();  }

            catch (Exception ex)
  {   MessageBox.Show(ex.Message);    }
        }

Not working (with password) :

SqlCeConnection sqlcon = new SqlCeConnection(@"Data Source = TranslationTest.sdf;Password=778899;");
        SqlCeCommand sqlcmd;
        SqlCeDataReader sqldr;
        AutoCompleteStringCollection namesCollection = new AutoCompleteStringCollection();
        
private void Form1_Load(object sender, EventArgs e)
        {

            try {
  sqlcon.Open();
  sqlcmd = new SqlCeCommand("SELECT EnglishWord,ArabicWord FROM T1", sqlcon);
  sqldr = sqlcmd.ExecuteReader();
  AutoCompleteStringCollection mycollection = new AutoCompleteStringCollection();
  while (sqldr.Read())
  {    mycollection.Add(sqldr.GetString(0));         }
  textBox1.AutoCompleteCustomSource = mycollection;
  sqlcon.Close();  }

            catch (Exception ex)
  {   MessageBox.Show(ex.Message);    }
        }

Extras :
- Multiline = false
- Auto complete mode = suggest (tried Suggest & append .. the same problem)
- Password added with VS2010 http://i.imgur.com/2dSNtDo.jpg